End-of-session wrap-up ritual before clearing context. Reviews the session for durable facts to save to memory, updates skills with newly discovered gotchas, writes a session log for substantial project work, cleans up temp files, and writes a handoff plan so the next session can resume without re-discovery. Use when the user is about to /clear, when context is running low, or at the natural end of a work session. Triggers on "/wrap-session", "wrap up this session", "we're running low on context", "prepare to clear context", "before we clear".
